Ext.define("Admin.ux.ComboBoxTree", {
    extend: "Ext.form.field.Picker",
    requires: ["Ext.tree.Panel"],
    xtype:'combobox-tree',
    initComponent: function() {
        var self = this;
        Ext.apply(self, {
            fieldLabel: self.fieldLabel,
            labelWidth: self.labelWidth
        });
        self.callParent();
    },
    createPicker: function() {
        var self = this;
        var store = Ext.create('Ext.data.TreeStore', {
            proxy: {
                type: 'ajax',
                url: self.storeUrl
            },
            sorters: [{
                property: 'leaf',
                direction: 'ASC'
            },
            {
                property: 'text',
                direction: 'ASC'
            }],
            root: {
                id: self.rootId,
                text: self.rootText
            },
            nodeParameter: self.treeNodeParameter
        });
        self.picker = new Ext.tree.Panel({
            height: 300,
            autoScroll: true,
            floating: true,
            focusOnToFront: false,
            shadow: true,
            ownerCt: this.ownerCt,
            useArrows: true,
            store: store,
            rootVisible: false
        });
        self.picker.on({
            checkchange: function(record, checked) {
                var checkModel = self.checkModel;
                if (checkModel == 'double') {
                    var root = self.picker.getRootNode();
                    root.cascadeBy(function(node) {
                        if (node.get('text') != record.get('text')) {
                            node.set('checked', false);
                        }
                    });
                    if (record.get('leaf') && checked) {

                        self.setRawValue(record.get('id')); // 隐藏值
                        self.setValue(record.get('text')); // 显示值
                    } else {
                        record.set('checked', false);
                        self.setRawValue(''); // 隐藏值
                        self.setValue(''); // 显示值
                    }
                } else {

                    var cascade = self.cascade;

                    if (checked == true) {
                        if (cascade == 'both' || cascade == 'child' || cascade == 'parent') {
                            if (cascade == 'child' || cascade == 'both') {
                                if (!record.get("leaf") && checked) record.cascadeBy(function(record) {
                                    record.set('checked', true);
                                });

                            }
                            if (cascade == 'parent' || cascade == 'both') {
                                pNode = record.parentNode;
                                for (; pNode != null; pNode = pNode.parentNode) {
                                    pNode.set("checked", true);
                                }
                            }

                        }

                    } else if (checked == false) {
                        if (cascade == 'both' || cascade == 'child' || cascade == 'parent') {
                            if (cascade == 'child' || cascade == 'both') {
                                if (!record.get("leaf") && !checked) record.cascadeBy(function(record) {

                                    record.set('checked', false);

                                });
                            }

                        }

                    }

                    var records = self.picker.getView().getChecked(),
                    names = [],
                    values = [];
                    Ext.Array.each(records,
                    function(rec) {
                        names.push(rec.get('text'));
                        values.push(rec.get('id'));
                    });
                    self.setRawValue(values.join(';')); // 隐藏值
                    self.setValue(names.join(';')); // 显示值
                }

            },
            itemclick: function(tree, record, item, index, e, options) {
                var checkModel = self.checkModel;
                if (checkModel == 'single') {
                    if (record.get('leaf')) {
                        self.setRawValue(record.get('id')); // 隐藏值
                        self.setValue(record.get('text')); // 显示值
                    } else {
                        self.setRawValue(''); // 隐藏值
                        self.setValue(''); // 显示值
                    }
                }

            }
        });
        return self.picker;
    },
    alignPicker: function() {
        var me = this,
        picker, isAbove, aboveSfx = '-above';
        if (this.isExpanded) {
            picker = me.getPicker();
            if (me.matchFieldWidth) {
                picker.setWidth(me.bodyEl.getWidth());
            }
            if (picker.isFloating()) {
                picker.alignTo(me.inputEl, "", me.pickerOffset); // ""->tl
                isAbove = picker.el.getY() < me.inputEl.getY();
                me.bodyEl[isAbove ? 'addCls': 'removeCls'](me.openCls + aboveSfx);
                picker.el[isAbove ? 'addCls': 'removeCls'](picker.baseCls + aboveSfx);
            }
        }
    }
});